DVI as a standard features a number of sub-standards, some analog, some digital. Now DVI is already seeing the writing on the wall due to its limited bandwidth, just as the world grows accustomed to it. HDMI is crossing from the TV set to the computer, UDI is creeping into the market, and DisplayPort is riding over the horizon and hoping to take over the world. What if you just want to play Supreme Commander or do your taxes? Can’t you just poke a monitor cable plug into a display adapter and be done with it?
If you are confused by display connectors, this article may be of some use to you. They go over the basics of VGA, DVI, HDMI and even UDI.
Source: Extreme Tech